I've got the 18/21 SM Pro kit on my X and they are indeed a direct swap. I also bought OEM brake rotors to save me the hassle of swapping those when I want to switch back and forth between street and dirt. Makes it real easy, and the larger diameter rotor up front offers great stopping power. I also bought a 49T sprocket for the rear wheel, and I use a 110 link chain.

You can use the same chain as long as you use the same size rear sprocket, but for dirt, you'll probably want 3 or 4 extra teeth in the rear.

I've got the 18/21 SM Pro kit on my X and they are indeed a direct swap. I also bought OEM brake rotors to save me the hassle of swapping those when I want to switch back and forth between street and dirt. Makes it real easy, and the larger diameter rotor up front offers great stopping power. I also bought a 49T sprocket for the rear wheel, and I use a 110 link chain.

You can use the same chain as long as you use the same size rear sprocket, but for dirt, you'll probably want 3 or 4 extra teeth in the rear.

They're so cheap, I consider them to be disposable consumable parts, much like an oil filter. I bought 3 pairs of them and have them on both of my bikes (with a set of spares). You can mount them inside the controls, pointing down under the bars, or out at the end of the bars. They're rock solid and don't vibrate. If you bust one, then so what...you're out $5 bucks.

I also have since picked up some Double Take mirrors. A little more spendy $$ by the time you factor in the cost of RAM mounts, but they are very good (although they do vibrate an acceptably small amount).

I just cleaned my spark arrestor for the second time in the last 1,000 miles or so. It was pretty dirty again. I've been riding a daily for short trips in the city and it's been pretty cold here (well, 30's and 40's). Should I chalk this up to lots of warm ups? Or is this a sign of something else going on? It's been running great, never a hickup. About 21,000 on the clock.

Originally Posted by yawI just cleaned my spark arrestor for the second time in the last 1,000 miles or so. It was pretty dirty again. I've been riding a daily for short trips in the city and it's been pretty cold here (well, 30's and 40's). Should I chalk this up to lots of warm ups? Or is this a sign of something else going on? It's been running great, never a hickup. About 21,000 on the clock.